Loose-leaf book.



E. P. A. WOLF.

' LOOSE LEAF BOOK. APPLICATION FILED 8EPT.9,1912.

Patented Nov. 11, 1913. sums-anam- 1.

INVENTOR, Y

ATTORNEY Ernest BA.

E. P. AfWOLP.

LOOSE LEAF BOOK.

APPLICATION IILED SEPT. 9,1912.

Patented Nov. 11, 1913.

2 SHEETS-SHEET 2.

INVENTOR, ETIYCSZ'FA,

m 8 w W UNITED STATES PATENT OFF-Ion.

ERNEST r. A. woLr, QFNEW YORK, N. Y.

LOOSE-LEAF BOOK.

Specification of Letters Patent.

Patented Nov. 11, 191-3.

To all whom it may concern:

Be it known that I, ERnEs'r P. A. WOLF, a citizen of the United States, and resident of New York, in the county of New York and State of New York, ve invented certain new and useful Improvements in Loose- Leaf Books, of which the following is a specification.

This invention relates to loose leaf books and has for its object means for assembling and holding between the side boards of the binding a: eater or less number of leaves which can e quickly and readily added to or reduced, the leaves being substantially bound under any circumstances, as will be more fully described in the following specification, set forth in the claims and illustrated in the drawings, wherein Figure 1 is a perspective view of a book with its side thrown open to illustrate the invention; Fig. 2 is a perspective view of the binding thrown open; Fig. 3 is a view of the binding strips; Fig. 4 is a plan view of the rear edge of the leaves showing the looking means; Fig. 5 is a sectional view through the rear edge of the book and binding strips; Fig. 6 is a similar view showing a reduced number of leaves in the binding; Fig. 7 is a similar view showing the book opened; Fig. 8 illustrates-the arrangement of the assembling rod. Fig. 9 is an enlarged view of a portion of the back plate and the tubular bearing.

This improved loose leaf book is provided with resilient strips each secured to one side of the binder leaving the unsecured ends free,

but cooperating to retain the leaves in the binder. Means are, however, provided to lock the two strips together, no matter how,

many leaves may be in the binding, and these looks or latches also compress the leaves into suitable compass for ordinary use. w 1

The book comprises loose leaves 10 having at their rear edge rectangular slots 11 through which pass the spring strips 12 overlapping each other and secured to each The strips 12 each have a longitudinal row of perforations 17 which are adapted to.

strips are placed side by lie side by side in the slots of the bookf sheet carrying on its inner edge a steel strip 18 perforated or slotted to conform with the leaves of the book, and to one or bpth of these strips are pivoted the hooks or latches 19 to be swung into the perforations of the spring strips to, retain the strip 18 at that point. i

As will be seen in Fig. 6 the. binder is about half filled with leaves and the.ho'ok 19 is inserted in one of the perforations after the strip 18 has been forced down to its limit. The .two binding strips are thus locked toget-her and the book may be opened and handled, the leaves being retained in a convenient position.

The position of the book in Fig. 7 shows how the springs occupy a reversed'position from the normal, yet their relationship with the leaves is not changed;

When the leaves are assembled, the spring strips on the lower board being 13 erma-- nent, they are passed through the slots of the upper strips are inserted in the intervals between the tubes 15 and the rod 14 inserted in the tubes and eyes. 1 The rod 14 ordinarily has an upturned end 20 to insert and retract it, but when it is desired to render the binding more permanent and prevent the removal of the rod, it is constructed as shown in Fig. 8, where it willbe seen that. the outer end is threaded and a tubular nut 21 is provided to be screwed on this end while in the tubes 15 so that the rod may be removed only by those familiar with its construction.-

This construction provides a simple and cheap means for binding books, pamphlets andv periodicals temporarily or permanently, and provides for the substantial binding of a limited number. It'is obvious that more or less leaf slots yrnay be used,;and it will beseen in Fig. 4 that one of the hooks turns inward. This is to provide for the initial 0 oration in the binding, and when the s eets are assembled the middle strips are first locked together. The outer strips are located and latched and the rod is then used to hold them to the back of the book. Other modifications may be resorted to without departin from the essential'features above describe The construction ofthe back plate and 'bearings is more clearly shown in the enlarged v1ew' Fig. 9, where it will be seen that after the tube 15 is formed, the end 22 of the sheet metal plate is formed into a clenching strip' to engage and hold the edge 'of" the cloth fly-23,'which is 'pastedto the side board 24. The whole is then coveredontheoutside by a cloth or leather back strip 25, forming. a solid and substantial binding and one inv which loose leaves may be quickly placed and held.

WhatIclaim as new and desire to secure by Letters Patent is: 7 I

'1. In a loose-leaf book, the combination withleaves having slots at one edge, of side boards and a back, tubular bearings on each side board, rods for the bearings, and flexible strips arranged in pairs in each'slot and I the strips of each pair being respectively attached to 'an opposite bearing rod.

2. In a loose leaf book, the combination with leaves having slots at their rear-edges,

' adapted to back strip and side boards, tubular bearings in connection therewith, spring strips ada ted to enter the leaf slots and having per 0- rations and eyes, rods with threaded stems ass through the bearings and eyes, a nut or the stem of the rods to insert or remove them, and hooks on the outer fly leaf and adapted to enter the perforations. I

4. In a loose leaf'boo'k, the combination with leaves having slots at the edge, of a back strip comprising a plate with tubular bearings, side boards, spring strips adapted to enter the leaf slots and having eyes and perforations, rods adapted to pass through the eyes and bearings, fly leaves with metal strips having slots to correspond with the slots of the leaves, and hooks 'pivoted on the metal strips on the outer fly leaf and adapted to engage the perforations of the'spring strip.

5. In a loose leaf book, the combination with leaves having slots at the edge, of a back strip comprising a sheet metal late with tubular bearings and clenching ges, back boards, flies carried by the clenchin edges and adapted to be pasted to the bac boards, perforated sprin strips carried by the tub 'ar bearings and adapted to -';,enter the leaf slots, metal stri s on the giouter leaves, and hooks on one o the metal strips to pass into'the perforations and retain the leaves.

Signed at New York in the county of New Yorkand State of New York this 4th day of Sept. A. D. 1912. (I

ERNEST P. A. WOLF.

Witnesses: W. E. LAWSON, JAMES F. DUHAMEL, 

